Apache RocketMQ 单机版搭建

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本文介绍如何在CentOS 7.4环境下使用Maven编译安装Apache RocketMQ 4.2.0，并进行单机部署及基本消息收发测试。包括配置JVM参数、启动Name Server和Broker等步骤，还提供了测试代码示例。

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Apache RocketMQ 单机版搭建

环境

jdk1.8
maven 3.2
centos7.4 (vobox 虚拟机)

1.下载源码编译

wget  http://mirror.bit.edu.cn/apache/rocketmq/4.2.0/rocketmq-all-4.2.0-source-release.zip
unzip rocketmq-all-4.2.0-source-release.zip
cd rocketmq-all-4.2.0
mvn -Prelease-all -DskipTests clean install -U

2.配置jvm

vi  bin/runserver.sh 
vi  bin/runbroker.sh  
server -Xms1g -Xmx1g -Xmn512m -XX:PermSize=128m -XX:MaxPermSize=512m"

3.启动

nohup sh bin/mqnamesrv &
tail -f ~/logs/rocketmqlogs/namesrv.log 查看日志

nohup sh bin/mqbroker -n localhost:9876 &
tail -f ~/logs/rocketmqlogs/broker.log

4.运行测试代码

 export NAMESRV_ADDR=localhost:9876
 sh bin/tools.sh org.apache.rocketmq.example.quickstart.Producer
 SendResult [sendStatus=SEND_OK, msgId= ...

 sh bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer
 ConsumeMessageThread_%d Receive New Messages: [MessageExt..

5.运行测试代码(外部机器)

public class Producer {
    public static void main(String[] args) throws Exception {
        DefaultMQProducer defaultMQProducer = new DefaultMQProducer("mq_test");
        defaultMQProducer.setNamesrvAddr("192.168.56.102:9876");
        defaultMQProducer.start();
        for (int i = 0; i <100; i++) {
            Message message  = new Message();
            message.setTopic("TopicTest");
            message.setTags("TagA");
            message.setBody(("hi come  "+i).getBytes(RemotingHelper.DEFAULT_CHARSET));
            SendResult sendResult = defaultMQProducer.send(message);
            System.out.println(sendResult.toString());
        }
        defaultMQProducer.shutdown();
    }
}

public class Consumer {
    public static void main(String[] args) throws InterruptedException, MQClientException {

        DefaultMQPushConsumer consumer = new DefaultMQPushConsumer("consumer1");

        consumer.setNamesrvAddr("192.168.56.102:9876");

        consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);


        consumer.subscribe("TopicTest", "*");

        consumer.registerMessageListener(new MessageListenerConcurrently() {
            public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs,
                                                            ConsumeConcurrentlyContext context) {

                System.out.println(Thread.currentThread().getName() + " Receive New Messages: ");
                msgs.forEach(item->{
                    System.out.println(new String(item.getBody()));
                });
                return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
            }
        });
        consumer.start();
        System.out.println("Consumer Started.");
    }
}

6.异常错误

异常1

Exception in thread "main" org.apache.rocketmq.client.exception.MQClientException: No route info of this topic, TopicTest

解决办法
关闭虚拟机的防火墙

systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd --state #查看默认防火墙状态（关闭后显示notrunning，开启后显示running）

异常2

Caused by: org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to <10.0.2.5:10911> failed

原因：因为在vbox中设置了两张网卡导致rocketmq 识别出错
解决办法：直接在vbox 只启用一块网卡重启 ok